Difference between revisions of "Sega Mega Drive/Hardware revisions"

From Sega Retro
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==Model 1==
 
==Model 1==
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{{sectionsNewStart|imagewidths=320px}}
 
{{sectionsNewStart|imagewidths=320px}}
 
{{SectionsNew
 
{{SectionsNew
 
| name=VA0 (JPN)
 
| name=VA0 (JPN)
 
| image=Megadrive_JPN_VA0_Serial_No_-_98M10036.jpg
 
| image=Megadrive_JPN_VA0_Serial_No_-_98M10036.jpg
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| desc=Components :
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| desc=Components:
  
 
*M68K CPU: Signetics SCN68000C8N64
 
*M68K CPU: Signetics SCN68000C8N64
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==Model 2==
 
==Model 2==
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===VA0 (PAL)===
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{{sectionsNewStart|imagewidths=320px}}
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[[File:PC BD MD2 VA0 PAL.jpg|320px]]
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{{SectionsNew
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===VA1 (USA)===
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| name=VA0 (PAL)
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[[File:MD2 US PCB Top VA1.jpg|320px]]
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| image=PC BD MD2 VA0 PAL.jpg
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===VA1 (PAL)===
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| desc=
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[[File:PC BD MD2 VA1 PAL.jpg|320px]]
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}}
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{{SectionsNew
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Components:
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| name=VA1 (USA)
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| image=MD2 US PCB Top VA1.jpg
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| desc=
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}}
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{{SectionsNew
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| name=VA1 (PAL)
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| image=PC BD MD2 VA1 PAL.jpg
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| desc=Components:
 
*M68K CPU: Motorola MC68HC000FN8
 
*M68K CPU: Motorola MC68HC000FN8
 
*M68K memory: Sanyo LC331632M-12
 
*M68K memory: Sanyo LC331632M-12
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*Video Encoder: Fujitsu MB3514
 
*Video Encoder: Fujitsu MB3514
 
*Amplifier: BA10324AF
 
*Amplifier: BA10324AF
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}}
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===VA1.8 (USA)===
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{{SectionsNew
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[[File:PC_BD_MD2_VA1.8_USA.JPG|320px]]
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| name=VA1.8 (USA)
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| image=PC_BD_MD2_VA1.8_USA.JPG
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===VA1.8 (PAL)===
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| desc=
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[[File:PC BD MD2 VA1.8 PAL.jpg|320px]]
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}}
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===VA1.8 (Asia)===
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{{SectionsNew
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[[File:PC_BD_MD2_VA1.8_ASIA.jpg|320px]]
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| name=VA1.8 (PAL)
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| image=PC BD MD2 VA1.8 PAL.jpg
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Components:
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| desc=
 +
}}
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{{SectionsNew
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| name=VA1.8 (Asia)
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| image=PC_BD_MD2_VA1.8_ASIA.jpg
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| desc=Components:
 
*M68K CPU: Motorola MC68HC000FN8
 
*M68K CPU: Motorola MC68HC000FN8
 
*M68K memory: Toshiba TC511632FL-10 (32Kx16 PSRAM, 100 ns)
 
*M68K memory: Toshiba TC511632FL-10 (32Kx16 PSRAM, 100 ns)
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*Z80 memory: [NUMBER PLEASE] (8Kx8 SRAM)
 
*Z80 memory: [NUMBER PLEASE] (8Kx8 SRAM)
 
*Main ASIC: Sega 315-5660
 
*Main ASIC: Sega 315-5660
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}}
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===VA1.8===
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{{SectionsNew
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| name=VA2
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===VA2===
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| image=
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| desc=
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===VA2.3===
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}}
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{{SectionsNew
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===VA3===
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| name=VA2.3
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[[File:PC_BD_MD2_VA3_USA_HAL.JPG|320px]]
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| image=
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| desc=
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===VA4===
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}}
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[[File:PC_BD_MD2_VA4_171_-_7229B_-_11.JPG|320px]]
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{{SectionsNew
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| name=VA3
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| image=PC_BD_MD2_VA3_USA_HAL.JPG
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| desc=
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}}
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{{SectionsNew
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| name=VA4
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| image=PC_BD_MD2_VA4_171_-_7229B_-_11.JPG
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| desc=
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}}
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|}
  
 
==Model 3==
 
==Model 3==
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{{sectionsNewStart|imagewidths=320px}}
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===VA1 (USA)===
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{{SectionsNew
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| name=VA1 (USA)
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===VA2 (USA)===
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| image=
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[[File:PC_BD_MD3_VA2_USA.jpg|320px]]
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| desc=
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}}
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Components:
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{{SectionsNew
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| name=VA2 (USA)
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| image=PC_BD_MD3_VA2_USA.jpg
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| desc=Components:
 
*Main ASIC: Sega 315-6123 (contains M68K, Z80, VDP, YM2612, and probably some other components.)
 
*Main ASIC: Sega 315-6123 (contains M68K, Z80, VDP, YM2612, and probably some other components.)
 
*Memory (right of main ASIC): NEC D4502161G5 (128Kx16 SDRAM)
 
*Memory (right of main ASIC): NEC D4502161G5 (128Kx16 SDRAM)
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*Video Encoder (bottom-left of main ASIC): Sony CXA1645M
 
*Video Encoder (bottom-left of main ASIC): Sony CXA1645M
 
*Amplifier (left of main ASIC): TI 85AFTRF LM324  
 
*Amplifier (left of main ASIC): TI 85AFTRF LM324  
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}}
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|}
  
 
[[Category:Mega Drive hardware]]
 
[[Category:Mega Drive hardware]]

Revision as of 04:20, 22 April 2015

Model 1

Megadrive JPN VA0 Serial No - 98M10036.jpg VA0 (JPN)
Components:
  • M68K CPU: Signetics SCN68000C8N64
  • M68K memory: 2x HM65256BLSP-15 (32Kx8 PSRAM, 150 ns)
  • Z80 CPU: Zilog Z0840004PSC
  • Z80 memory: TMM2063P - 10 (8Kx8 SRAM, 100 ns)
  • I/O chips: Sega 315-5308, Sega 315-5309, Signectic 74LS00N, 74LS161AN, 74F161AN, 74LS74AN (DIP-16)
  • VDP: Sega 315-5313 (Yamaha YM7101)
  • Video RAM: 2x HM53461ZP-12 (64Kx4 DRAM 120ns)
  • Headphone amp: Sony CXA1034
  • Video encoder: Sony CXA1145
  • FM synthesizer: Yamaha YM2612
Megadrive VA1 Produced unit 99N83420 (JPN).JPG VA1 (JPN)
Components:
  • M68K CPU: Signetics SCN68000C8N64
  • M68K memory: 2x TC51832SPL-10 (32Kx8 PSRAM, 100 ns)
  • Z80 CPU: Zilog Z0840004PSC
  • Z80 memory: NEC D4168C-20 (8Kx8 XRAM, 200 ns)
  • I/O chips: Sega 315-5308, Sega 315-5309, Sega 315-5345 (DIP-16)
  • VDP: Sega 315-5313 (Yamaha YM7101)
  • Video RAM: 2x HM53461ZP-12 (64Kx4 DRAM 120ns)
  • Headphone amp: Sony CXA1034
  • Video encoder: Sony CXA1145
  • FM synthesizer: Yamaha YM2612
  • Capacitors : TK Japan
MD1 IC BD M5 USA VA2.jpg VA2 (USA, High Definition Graphics)
Components:
  • M68K CPU: Signetics SCN68000C8N64
  • M68K memory: 2x TC51832SPL-12 (32Kx8 PSRAM, 120 ns)
  • Z80 CPU: Zilog Z0840004PSC
  • Z80 memory: NEC D4168C-15 (8Kx8 XRAM, 150 ns)
  • I/O chips: Sega 315-5308, Sega 315-5309, Sega 315-5345 (DIP-16)
  • VDP: Sega 315-5313 (Yamaha YM7101)
  • Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM)
  • Headphone amp: Sony CXA1034
  • Video encoder: Sony CXA1145
  • FM synthesizer: Yamaha YM2612
VA3
IC BD M5 PAL VA4.jpg VA4 (PAL)
VA5
MD1 IC BD M5 USA VA6.jpg VA6 (USA, High Definition Graphics)
Components:
  • M68K CPU: Motorola MC68000P8
  • M68K memory: 2x HM652568LSP-10 (32Kx8 PSRAM, 100 ns)
  • Z80 CPU: Zilog Z0840004PSC
  • Z80 memory: MB8464A-10 (8Kx8 SRAM, 100 ns)
  • I/O chip: Sega 315-5433
  • VDP: Sega 315-5313 (Yamaha YM7101)
  • Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM)
  • Headphone amp: Sony CXA1034
  • Video encoder: Sony CXA1145P
  • FM synthesizer: Yamaha YM2612
MD1 IC BD M5 PAL VA6.jpg VA6 (PAL)
VA6.8
PC BD M5 USA VA7.jpg VA7 (USA)

Model 2

PC BD MD2 VA0 PAL.jpg VA0 (PAL)
MD2 US PCB Top VA1.jpg VA1 (USA)
PC BD MD2 VA1 PAL.jpg VA1 (PAL)
Components:
  • M68K CPU: Motorola MC68HC000FN8
  • M68K memory: Sanyo LC331632M-12
  • Z80 CPU: Toshiba 84C00AU-6
  • Main ASIC: Sega 315-5660
  • Video Encoder: Fujitsu MB3514
  • Amplifier: BA10324AF
PC BD MD2 VA1.8 USA.JPG VA1.8 (USA)
PC BD MD2 VA1.8 PAL.jpg VA1.8 (PAL)
PC BD MD2 VA1.8 ASIA.jpg VA1.8 (Asia)
Components:
  • M68K CPU: Motorola MC68HC000FN8
  • M68K memory: Toshiba TC511632FL-10 (32Kx16 PSRAM, 100 ns)
  • Z80 CPU: Toshiba 84C00AU-6
  • Z80 memory: [NUMBER PLEASE] (8Kx8 SRAM)
  • Main ASIC: Sega 315-5660
VA2
VA2.3
PC BD MD2 VA3 USA HAL.JPG VA3
PC BD MD2 VA4 171 - 7229B - 11.JPG VA4

Model 3

VA1 (USA)
PC BD MD3 VA2 USA.jpg VA2 (USA)
Components:
  • Main ASIC: Sega 315-6123 (contains M68K, Z80, VDP, YM2612, and probably some other components.)
  • Memory (right of main ASIC): NEC D4502161G5 (128Kx16 SDRAM)
  • Oscillator (bottom-right of main ASIC): SG53 PTR S 53.6931M
  • Video Encoder (bottom-left of main ASIC): Sony CXA1645M
  • Amplifier (left of main ASIC): TI 85AFTRF LM324
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